As Internet, security problems are still a big challenge as
there are many security events occurred. The underground
economics based on Internet Scam and Fraud is booming.
These attackers initiate more and more E-crime attacks and
abuse, such as Spams, Phishing attack, Internet worms etc.
Firewalls, Intrusion Detection System (IDS) and Anti-Virus
Gateway are now widely deployed in edge-network to protect
end-systems from the attacks. When the malicious attacks
have fixed patterns, they can be easily identified and matching
these patterns. For example, the Distributed Denial of service
(DDoS) contains very few, if any, signatures strings to
identify. Nowadays DDoS attacks are likely launched by a
large volume of botswhich forms a Botnet controlled by bot
master. The bots are commanded to generate attack new
victim machine and enlarge botnet. The bots also commanded
to conduct other issues such as disseminating spam or
launching Distributed Denial-of-Service (DDoS) attacks to
victim hosts. To countermeasure botnet, secure overlay is
proposed. To prevent distributed attacks, collaboration is
needed, so we used Collaborative Network
SecurityManagement System (CNSMS).
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